//package org.destinyshine.jenode.testcases.dispatcher;
//
//import java.util.HashMap;
//import java.util.List;
//import java.util.Map;
//import java.util.Properties;
//import java.util.concurrent.ExecutorService;
//import java.util.concurrent.Executors;
//
//import kafka.consumer.Consumer;
//import kafka.consumer.ConsumerConfig;
//import kafka.consumer.KafkaStream;
//import kafka.javaapi.consumer.ConsumerConnector;
//
///**
// * 详细可以参考：https://cwiki.apache.org/confluence/display/KAFKA/Consumer+Group+Example
// *
// * @author Fung
// *
// */
//public class ConsumerDemo {
//	private final ConsumerConnector consumer;
//	private final String topic;
//	private ExecutorService executor;
//
//	public ConsumerDemo(String a_zookeeper, String a_groupId, String a_topic) {
//		consumer = Consumer.createJavaConsumerConnector(createConsumerConfig(a_zookeeper,a_groupId));
//		this.topic = a_topic;
//	}
//
//	public void shutdown() {
//		if (consumer != null)
//			consumer.shutdown();
//		if (executor != null)
//			executor.shutdown();
//	}
//
//	public void run(int numThreads) {
//		Map<String, Integer> topicCountMap = new HashMap<String, Integer>();
//		topicCountMap.put(topic, new Integer(numThreads));
//		Map<String, List<KafkaStream<byte[], byte[]>>> consumerMap = consumer
//				.createMessageStreams(topicCountMap);
//		List<KafkaStream<byte[], byte[]>> streams = consumerMap.get(topic);
//
//		// now launch all the threads
//		executor = Executors.newFixedThreadPool(numThreads);
//
//		// now create an object to consume the messages
//		//
//		int threadNumber = 0;
//		for (final KafkaStream stream : streams) {
//			executor.submit(new ConsumerMsgTask(stream, threadNumber));
//			threadNumber++;
//		}
//	}
//
//	private static ConsumerConfig createConsumerConfig(String a_zookeeper,
//			String a_groupId) {
//		Properties props = new Properties();
//		props.put("zookeeper.connect", a_zookeeper);
//		props.put("group.id", a_groupId);
//		props.put("zookeeper.session.timeout.ms", "400");
//		props.put("zookeeper.sync.time.ms", "200");
//		props.put("auto.commit.interval.ms", "1000");
//
//		return new ConsumerConfig(props);
//	}
//
//	public static void main(String[] arg) {
//		String[] args = { "172.168.63.221:2188", "group-1", "page_visits", "12" };
//		String zooKeeper = args[0];
//		String groupId = args[1];
//		String topic = args[2];
//		int threads = Integer.parseInt(args[3]);
//
//		ConsumerDemo demo = new ConsumerDemo(zooKeeper, groupId, topic);
//		demo.run(threads);
//
//		try {
//			Thread.sleep(10000);
//		} catch (InterruptedException ie) {
//
//		}
//		demo.shutdown();
//	}
//}